Box and axle fob



" VUNITED s'rATFs IFATFNT oFFroF.A

BFNJ. KRAFT, oF READING, PENNSYLVANIA.

Fox AND AXLF Fon sAvINe o'rn.`

Specification of Letters Patent No. 8,187, dated .Tuly` 1, 1851.

To all fwwmz't may cncern: l

Be it known` that I, BENJAMIN KRAFT, of

` the city of Reading, in the county of Berks boxes represented by thedotted line a, a. l

K, represents the journal box. b, b, .the spacebetween the journal boxand thesldes of the reservoir. j f

Fig. 2, a birds eye view ofthe lower box. 1c the journal box. t, 5,5, b,the reservoir on its four sides. S, S, the two ends of the reservoirwith their beveled edges.

Fig. 3. `The upper box or cap a, 0, b, forming the V channeled passagefor `the oil.

. Fig. `4. The shaft andjournal. H, the portion `of the journalbearingon its box.` D, D, the two circular channelsrequired ina continuousshaft, one only necessary in an end journal. i j f Fig. 5. The relativeheight of the sides of reservoir box and that of the journal box, shownby concentric circles lE, F, where E, is the circumference of thejournal and F,

that of the oil box.

Toenable others skilled in the art to make and use my invention I willproceed todescribe its construction and operation.

The natureof my invention consists of a box surrounding the journal box,on its sides and ends forming a reservoir for the oil, l The sides l ona higher level than the bottom of the reservoir or oil box andsuliiciently above its bottom, allowsa groove to be formed around" thejournal box deep enough to permit the oil, withthe impurities, arisingfromfriction of the metal and dust to lie undisturbed` i i y i i by therevolutions of the journal: this i ow of the oil not only from its endsbut also" from the under side of the journal it carries with it allimpurity, thus preserving the journal and box from destructive wear, l

and its smoothness unimpaired. Sould there be more oil poured on thejournal and box, than necessary, it lows into the oil box. The upper boxTis made smaller than the lower box, and has a V shaped channel to keepthe oil in the center of the journal box, preventing its flowing onftheshaft.

The journal is without a swell, either inside or outside ofthe box,having instead thereof a channel` or circular groove, sufficiently wideand deep to receive the beveled edge of the oil box, touching it `onlyon the outside shoulder, the journal at this groove does not rest uponthe reservoir box, all of its perpendicular bearings being on the'singlebox inthe center.` The channelfcut in i i the shaft is as wideasthespace for the oil .and the thickness of the sides ofthe oil box,

and from the `side ofthe channel being in contact with the outside ofthe oil box, any

oil that has crossed'the channel, will be removed by the beveled edge ofthe reservoir.` Those raised sides also prevent lateral motion of theshaft from their bearing `against `the outer shoulders of the channel.`To `prevent my invention being `misunderstood I would state, it is notfor supplying the journal with the same oil, as is the `case of Shugert,Davallan and others but in `savingit to be used again, after theimpurities have subsided: I offer no mechanical device for raising theoil from the reservoir asthey do.

I claim- Causing the beveled edges of the oil `box to enter the groovesof the axle and rest against their outershoulders but not against theirinner shoulders-thus at the same time preventing end play and the escapeof the oil, the journal bearing `being lower than the beveled edges ofthe oil box and suiciently above the bottom of it to prevent` the oilcoming from the box to the journal.

BENJAMIN KRAFT.` l Witnesses: C

CYRUs KRAUTZ, "DAVID MFDARY.`

